The AEM10941 is a solar harvesting IC. It handles a small solar panel and charges either a lithium battery or a super capacitor. I ordered a evaluation board (part number: 3AAEM10941CPCX10) to test it out for the Cat Feeder Unreminder but I went ahead and made a footprint for it in Eagle. The evaluation board comes with a couple solar panels and some super capacitors to mess around with.